Waxes are biologically important to plants and insects because they
- A. form waterproof coatings on leaves, fruits and exoskeletons
- B. store more energy per gram than any other molecule
- C. build the phospholipid bilayer of membranes
- D. act as receptors for hormones
Explanation
Waxes are highly hydrophobic, so the cuticle on leaves and the wax layer on insect exoskeletons prevent water loss and resist wetting. Energy storage is the role of fats, membranes are built from phospholipids, and receptors are proteins.
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